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236                                      FLORA   1NDICA.
known, to China and the Khasia; whilst Helmngia, Micro-
ptelea, Corylopsis, BucJdandia, and Quercus serrata, though all
Chinese and Khasian, are also common to the Himalaya; and
Vaccinium bracteatum, as we have elsewheu said, is found
in China, the Khasia, and the Peninsula, but not in the Hi-
Podostemon is a remarkable genus, which is abundant in all
the Khasian streams, even in the most rapid currents covering
the stones in autumn with a bright green carpet. This genus
is even more abundant in the Nilgiri and Ceylon streams,
and also found in Mishmi, but is quite unknown in the Hi-
Palms are very abundant in the Khasia, though much less
so than in the Malayan Peninsula and Eastern Archipelago.
We collected twenty-five species, belonging to the genera
Phoenix, Licuala,Areca,Jiren(/a,Plectocomia, Calamus, Caryota,
Cham&rops, and Wallichia. Of these the Cham&rops is pro-
bably identical with the Nipal and Kumaon C. Martiana,
though not found in any intermediate part of the Himalaya.
Livistona, which is said to occur at the northern base of the
Khasia, is found no further west.
There is only one pine in the Khasia mountains, Pinus Si-
'nensis. This species is not ^known as a native of the Hima-
laya, but it is not impossible that it may occur in some parts
of Bhotan. It may be conjectured too that it also extends
into the mountains of the eastward, but we do not yet know
any details of its distribution. In the Khasia hills it is
not found in the very rainy southern districts, but becomes
common -in the valley of the Boga Paid below Moflong, ami
thence extends throughout the range, and descends towards
Assam. The absence of Pinus longifolia is curious, as tlierc
is nothing in the climate adverse to its growth; bn+.tho ele-
vation is not sufficient to lead us to expect the occurrence of
any other of the Himalayan pines, or of the subalpinc plants
which accompany them. The common yew is however found
at 64)000 feet, and two species of Pndocarptif occur cm the